Zhu Shu Ji Nian (Annals on Bamboo) is the history of the Wei State in the Warring
States Period (475-221BC). The book used to have no name. It was named later as
Ji Nian (Annals) because of its chronological style, and also named as
Zhu Shu (Book on Bamboo) because the origin one was written on bamboo,
normally, it was called Zhu Shu Ji Nian (Annals on Bamboo).

There are altogether 13
sections, narrating the history of the Xia Dynasty (21st
century - 17th century BC), the Shang Dynasty
(17th century - 11th century BC), the Western Zhou Dynasty
(11th century - 771BC), the Spring and Autumn Period (770-476BC)
and the Warring States Period, which were sequenced according to the order of
the year. Quite a lot of records in the book are different from traditional
ones, and are closer to the facts. Besides, some records conform to the records
on Jiaguwen (inscriptions on animal bones and tortoise shells) and
inscriptions on bronze. The book is of great reference value for the present
study of the pre-Qin history.